2016-02-27 39 views
0

我正在创建一个网站,我正在使用母版页,并且我想在我的内容页面中使用文本框预测。但预测不起作用。但我需要使用ASP控件而不是HTML来做到这一点。 我的代码是:如何在ASP.NET上实现Google Places文本框预测?

<%@ Page Title="" Language="C#" MasterPageFile="~/MasterPage.master" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %> 
 

 
<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server"> 
 
</asp:Content> 
 
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server"> 
 
    <script type="text/javascript" src="http://maps.googleapis.com/maps/api/js?sensor=false&libraries=places"></script> 
 
<script type="text/javascript" src="http://maps.googleapis.com/maps/api/js?sensor=false&libraries=places"></script> 
 
    <script type="text/javascript"> 
 
     google.maps.event.addDomListener(window, 'load', function() { 
 
      var places = new google.maps.places.Autocomplete(document.getElementById('FromTxtBx')); 
 
      google.maps.event.addListener(places, 'place_changed', function() { 
 
       var place = places.getPlace(); 
 
       var address = place.formatted_address; 
 
       var latitude = place.geometry.location.lat(); 
 
       var longitude = place.geometry.location.lng(); 
 
       var mesg = "Address: " + address; 
 
       mesg += "\nLatitude: " + latitude; 
 
       mesg += "\nLongitude: " + longitude; 
 
       alert(mesg); 
 
      }); 
 
     }); 
 
    </script> <br /> 
 
    <div class="row"> 
 
    <form class="col s10" runat="server"> 
 
     <br /> 
 
     <div class="input-field"> 
 
<div class="col s12 m4 l5"> 
 

 
    <label for="last_name">FROM</label> 
 
    <asp:TextBox runat="server" id="FromTxtBx" class="validate"></asp:TextBox> 
 
    <asp:HiddenField runat="server" ID="FromPred" /> 
 
    
 
       </div> 
 
     </div> 
 
       <div class="input-field col s7 push-s1"> 
 
<div class="col s12 m4 l8"> 
 

 
    <label for="last_name1">TO</label> 
 
     <asp:TextBox runat="server" ID="last_name1"></asp:TextBox> 
 
      
 
</div> 
 
      </div> 
 
     </form> 
 
     </div> 
 
    
 
</asp:Content>

回答

0

有两两件事要做:

  1. 您确认调用谷歌API发生?使用IE开发工具(按F12)或使用Fiddler查看呼叫
  2. 但是,如果#1正常工作,最可能的问题是您正在执行GetElementById并且由于您有母版页,因此可能该名称已扩展为像$ masterpage $ control $ fromtextbox之类的内容。这是为了避免命名碰撞。

右键点击你的页面,查看源代码并确认是的。如果是,请不要使用该名称,而应使用其他选择器。

0

尝试,只要你喜欢这样,这将让你在文本框中的所有地址元素,那么你可以调用的使用和隐藏这些文本框

<html xmlns="http://www.w3.org/1999/xhtml"> 
    <head runat="server"> 
<title>Place Autocomplete Address Form</title> 
<meta name="viewport" content="initial-scale=1.0, user-scalable=no"> 
<meta charset="utf-8"> 
<style> 
    html, body { 
    height: 100%; 
    margin: 0; 
    padding: 0; 
    } 
    #map { 
    height: 100%; 
    } 
</style> 
<link type="text/css" rel="stylesheet" href="https://fonts.googleapis.com/css?family=Roboto:300,400,500"> 
<style> 
    #locationField, #controls { 
    position: relative; 
    width: 480px; 
    } 
    #autocomplete { 
    position: absolute; 
    top: 0px; 
    left: 0px; 
    width: 99%; 
    } 
    .label { 
    text-align: right; 
    font-weight: bold; 
    width: 100px; 
    color: #303030; 
    } 
    #address { 
    border: 1px solid #000090; 
    background-color: #f0f0ff; 
    width: 480px; 
    padding-right: 2px; 
    } 
    #address td { 
    font-size: 10pt; 
    } 
    .field { 
    width: 99%; 
    } 
    .slimField { 
    width: 80px; 
    } 
    .wideField { 
    width: 200px; 
    } 
    #locationField { 
    height: 20px; 
    margin-bottom: 2px; 
    } 
</style> 
    </head> 
    <body> 
    <form id="form1" runat="server"> 
    <h1> Address Lookup </h1> 


<div id="locationField"> 
    <input id="autocomplete" placeholder="Enter your address" 
     onFocus="geolocate()" type="text"></input> 
</div> 

<table id="address"> 
    <tr> 
    <td class="label">Street address</td> 
    <td class="slimField"><input class="field" id="street_number" 
      disabled="true"></input></td> 
    <td class="wideField" colspan="2"><input class="field" id="route" 
      disabled="true"></input></td> 
    </tr> 
    <tr> 
    <td class="label">City</td> 
    <td class="wideField" colspan="3"><input class="field" id="locality" 
      disabled="true"></input></td> 
    </tr> 
    <tr> 
    <td class="label">State</td> 
    <td class="slimField"><input class="field" 
      id="administrative_area_level_1" disabled="true"></input></td> 
    <td class="label">Zip code</td> 
    <td class="wideField"><input class="field" id="postal_code" 
      disabled="true"></input></td> 
    </tr> 
    <tr> 
    <td class="label">Country</td> 
    <td class="wideField" colspan="3"><input class="field" 
      id="country" disabled="true"></input></td> 
    </tr> 
</table> 

<script> 
    // This example displays an address form, using the autocomplete feature 
    // of the Google Places API to help users fill in the information. 

    // This example requires the Places library. Include the libraries=places 
    // parameter when you first load the API. For example: 
    // <script src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&libraries=places"> 

    var placeSearch, autocomplete; 
    var componentForm = { 
     street_number: 'short_name', 
     route: 'long_name', 
     locality: 'long_name', 
     administrative_area_level_1: 'short_name', 
     country: 'long_name', 
     postal_code: 'short_name' 
    }; 

    function initAutocomplete() { 
     // Create the autocomplete object, restricting the search to geographical 
     // location types. 
     autocomplete = new google.maps.places.Autocomplete(
     /** @type {!HTMLInputElement} */(document.getElementById('autocomplete')), 
     { types: ['geocode'] }); 

     // When the user selects an address from the dropdown, populate the address 
     // fields in the form. 
     autocomplete.addListener('place_changed', fillInAddress); 
    } 

    function fillInAddress() { 
     // Get the place details from the autocomplete object. 
     var place = autocomplete.getPlace(); 

     for (var component in componentForm) { 
      document.getElementById(component).value = ''; 
      document.getElementById(component).disabled = false; 
     } 

     // Get each component of the address from the place details 
     // and fill the corresponding field on the form. 
     for (var i = 0; i < place.address_components.length; i++) { 
      var addressType = place.address_components[i].types[0]; 
      if (componentForm[addressType]) { 
       var val = place.address_components[i][componentForm[addressType]]; 
       document.getElementById(addressType).value = val; 
      } 
     } 
    } 

    // Bias the autocomplete object to the user's geographical location, 
    // as supplied by the browser's 'navigator.geolocation' object. 
    function geolocate() { 
     if (navigator.geolocation) { 
      navigator.geolocation.getCurrentPosition(function (position) { 
       var geolocation = { 
        lat: position.coords.latitude, 
        lng: position.coords.longitude 
       }; 
       var circle = new google.maps.Circle({ 
        center: geolocation, 
        radius: position.coords.accuracy 
       }); 
       autocomplete.setBounds(circle.getBounds()); 
      }); 
     } 
    } 
</script> 
<script src="http://maps.googleapis.com/maps/api/js?sensor=false&libraries=places&callback=initAutocomplete" 
    async defer></script> 

</form>